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.TH "MEMCACHED_EXIST" "3" "Mar 11, 2024" "1.1" "libmemcached-awesome"
.SH NAME
memcached_exist \- libmemcached Documentation
.SH SYNOPSIS
.INDENT 0.0
.TP
.B #include <libmemcached/memcached.h>
Compile and link with \-lmemcached
.UNINDENT
.INDENT 0.0
.TP
.B \fI\%memcached_return_t\fP memcached_exist(\fI\%memcached_st\fP *ptr, char *key, size_t *key_length) 
.UNINDENT
.INDENT 0.0
.TP
.B \fI\%memcached_return_t\fP memcached_exist_by_key(\fI\%memcached_st\fP *ptr, char *group_key, size_t *group_key_length, char *key, size_t *key_length) 
.INDENT 7.0
.TP
.B Parameters
.INDENT 7.0
.IP \(bu 2
\fBptr\fP \-\- pointer to an initialized \fI\%memcached_st\fP struct
.IP \(bu 2
\fBgroup_key\fP \-\- the key namespace
.IP \(bu 2
\fBgroup_key_length\fP \-\- length of the \fI\%group_key\fP without any terminating zero
.IP \(bu 2
\fBkey\fP \-\- the key to check
.IP \(bu 2
\fBkey_length\fP \-\- length of the \fI\%key\fP without any terminating zero
.UNINDENT
.TP
.B Returns
\fI\%memcached_return_t\fP indicating success
.UNINDENT
.UNINDENT
.sp
New in version 0.53.

.SH DESCRIPTION
.sp
\fI\%memcached_exist()\fP can be used to check if a key exists.
.SH RETURN VALUE
.INDENT 0.0
.TP
.B \fI\%MEMCACHED_SUCCESS\fP
The key exists.
.TP
.B \fI\%MEMCACHED_NOTFOUND\fP
The key was not found.
.UNINDENT
.SH SEE ALSO
.sp
\fBmemcached(1)\fP
\fBlibmemcached(3)\fP
\fBmemcached_strerror(3)\fP
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